Fig. 3
From: Chest x-ray findings and temporal lung changes in patients with COVID-19 pneumonia
Temporal change of chest x-ray findings. Stacked-bar graph showed the distribution of the lung abnormalities on chest x-ray at various time points from symptom onset. GGO was the most frequent abnormality on initial x-rays, consolidation increased in frequency till the second week then regressed into GGO which again was more frequent on subsequent chest x-rays. Mixed pattern of GGO and nodular consolidation and reticulations were noted in the second week. Normal chest x-rays increased in frequency with time as patients showed clinical improvement. GGO = ground glass opacity